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Updated Lookup Tool for Domain Name Registration Data Now Available

Lookup tool domain name registration data 750x467 29jul19 en

Today, ICANN is launching an updated version of its lookup tool that makes use of the Registration Data Access Protocol, known as RDAP, to query, parse, and display registration data in a human-friendly format. The lookup tool – which gives users the ability to look up publicly available contact and other information related to a domain name – has been provided as a free public service since 2013.

RDAP was developed by the technical community in the Internet Engineering Task Force (IETF) as an eventual replacement for the WHOIS protocol. In late August, ICANN accredited registrars and registry operators will be required to provide registration data directory services through RDAP in addition to the WHOIS services.

ICANN's updated lookup tool will utilize RDAP as the primary protocol to perform the lookup. Should the RDAP lookup fail for any reason, users will be prompted with a request to optionally perform a WHOIS lookup. If users opt-in to use the WHOIS failover lookup, the tool will return results from the relevant WHOIS service, when available.

The updated tool has no impact on how users perform searches for registration data. Users simply enter a domain name into a search box to retrieve current publicly available registration data. This set of registration data is referred to as "Domain Name Registration Data." Due to applicable law and ICANN policies, results containing personal data associated with the queried domain name may be redacted for privacy. Across different registrars and registry operators, there may be variances in the data that is returned as redacted.

The updated tool also includes improvements to make the display of search results more user friendly. For example, the search results are displayed in a single-column layout to easily read longer datasets. Additionally, the raw data from the registrar and registry operator for each query is also made available.

In the event that users identify potentially inaccurate registration data or the RDAP or WHOIS service is unavailable, the website continues to provide a link to the WHOIS Inaccuracy and WHOIS Service complaint forms where these can be reported to ICANN Contractual Compliance.

We invite users to try out this new tool. For any questions about the use of this tool, please email


    Cheedercheese  10:02 UTC on 01 August 2019

    So happy

    Eduardo Quezada  19:33 UTC on 01 August 2019

    How do I unlock my domain to change hosting. My domain is Thank you Eduardo Quezada

    Franko  06:59 UTC on 02 August 2019

    Hola! Mi dominio no tiene dnssec y saber como obtengo EPP para estar al margen con docs Mi dominio es

    Daniel Rodríguez Herrera Darohe   12:32 UTC on 02 August 2019

    Yo tenía el dominio Darohe.dar registrado en no-ip antes de 2013

    mayelin  14:31 UTC on 07 August 2019


    mayelin  14:32 UTC on 07 August 2019

    la fantacia los primos

    reza nikkhah  22:27 UTC on 08 August 2019

    Please on block my site.

    Carolyn martinez  15:18 UTC on 16 August 2019

    What is a domaine?

    Nanda Sunanda  21:38 UTC on 18 August 2019

    Why when I check my domain (Indonesia domain), not function. Always error?

    anthony devenport  02:38 UTC on 29 March 2020

    I can not find my web domain

    Mike Takahashi  09:26 UTC on 30 March 2020

    Hi Anthony Devenport, please contact globalsupport(at) and they will be able to assist you further.

Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as"""" is not an IDN."